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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6830
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dc.contributor.authorPandge, M.B.-
dc.contributor.authorBagchi, Joydeep-
dc.contributor.authorSonkamble, S.S.-
dc.contributor.authorParekh, Viral-
dc.contributor.author+ 5 Co-authors-
dc.date.accessioned2018-01-29T12:31:28Z-
dc.date.available2018-01-29T12:31:28Z-
dc.date.issued2017-12-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2017, Vol. 472, p2042-2053en_US
dc.identifier.issn0035-8711-
dc.identifier.issn1365-2966 - (online)-
dc.identifier.urihttp://hdl.handle.net/2289/6830-
dc.descriptionOpen Accessen_US
dc.description.abstractWe present a detailed analysis of a young merging galaxy cluster MACS J0553.4−3342 (z=0.43) from Chandra X-ray and Hubble Space Telescope archival data. X-ray observations confirm that the X-ray emitting intra-cluster medium (ICM) in this system is among the hottest (average T = 12.1 ± 0.6 keV) and most luminous known. Comparison of X-ray and optical images confirms that this system hosts two merging subclusters SC1 and SC2, separated by a projected distance of about 650 kpc. The subcluster SC2 is newly identified in this work, while another subcluster (SC0), previously thought to be a part of this merging system, is shown to be possibly a foreground object. Apart from two subclusters, we find a tail-like structure in the X-ray image, extending to a projected distance of ∼1 Mpc, along the north-east direction of the eastern subcluster (SC1). From a surface brightness analysis, we detect two sharp surface brightness edges at ∼40 (∼320 kpc) and ∼80 arcsec (∼640 kpc) to the east of SC1. The inner edge appears to be associated with a merger-driven cold front, while the outer one is likely to be due to a shock front, the presence of which, ahead of the cold front, makes this dynamically disturbed cluster interesting. Nearly all the early-type galaxies belonging to the two subclusters, including their brightest cluster galaxies, are part of a well-defined red sequence.en_US
dc.language.isoenen_US
dc.publisherOxford University Press for The Royal Astronomical Societyen_US
dc.relation.urihttp://adsabs.harvard.edu/abs/2017MNRAS.472.2042Pen_US
dc.relation.urihttps://arxiv.org/abs/1701.00197en_US
dc.relation.urihttp://dx.doi.org/10.1093/mnras/stx2028en_US
dc.rights2017 The authors & the Royal Astronomical Societyen_US
dc.subjectgalaxies clustersen_US
dc.titleMACS J0553.4-3342: a young merging galaxy cluster caught through the eyes of Chandra and HST.en_US
dc.typeArticleen_US
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